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US5430916A - Simplified warp change in which a winding unit and clamping members are mounted on a carrier unit - Google Patents

Simplified warp change in which a winding unit and clamping members are mounted on a carrier unit Download PDF

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Publication number
US5430916A
US5430916A US08/162,191 US16219193A US5430916A US 5430916 A US5430916 A US 5430916A US 16219193 A US16219193 A US 16219193A US 5430916 A US5430916 A US 5430916A
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US
United States
Prior art keywords
warp
woven
winding roller
clamping
warp yarns
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/162,191
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English (en)
Inventor
Martin Plaschy
Reinhard Furrer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Staeubli AG
Original Assignee
Zellweger Luwa AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zellweger Luwa AG filed Critical Zellweger Luwa AG
Assigned to ZELWEGER USTER AG reassignment ZELWEGER USTER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FURRER, REINHARD, PLASCHY, MARTIN
Application granted granted Critical
Publication of US5430916A publication Critical patent/US5430916A/en
Assigned to STAUBLI AG reassignment STAUBLI AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZELLWEGER USTER AG
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/16—Apparatus for joining warp ends
    • D03J1/18—Apparatus for joining warp ends for joining, e.g. tying, a complete series of fresh warp threads to the used warp threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/001—Cloth or warp beam replacement

Definitions

  • the invention involves effecting a warp change on weaving machines by the tying of a new warp to the old woven-out warp, the old warp being pulled on its last piece through the harness over a length of approximately 1.5 to 2 m and wound up in order to eliminate cross-overs of the warp yarns and to loosen warp yarns stuck together with size.
  • the old warp is therefore prepared in such a way that the quality of the tying operation is influenced positively and, in particular, knotting can be carried out with straight yarns.
  • a parameter which is very important in weaving and which essentially determines profitability is the performance of a machine, a machine group or an entire weaving mill.
  • the machine manufacturers have always made efforts to increase the performance, but these have hitherto, in practice, been restricted only to the avoidance, reliable detection and rapid elimination of machine stoppages. Only very recently has it been acknowledged that the article change and warp change have a relatively high potential for rationalization which can be utilized to increase the performance. Two directions of endeavored are appropriate for this, on the one hand substantial automation and on the other hand such a high degree of simplification that these operations can be carried out by a single person.
  • the present invention comes within the latter sector and relates to a method and an apparatus for the simplified warp change on weaving machines, on which the end portion of a warp is pulled forwards over a specific length, in which method the warp yarns of the woven-out warp are fixed and cut off by a rail-like member and the warp yarns of the new warp are clamped on a tie-in frame which has clamping members and which is transported to the weaving machine, on which the warp-yarn layer of the woven-out warp is inserted into the clamping members.
  • the method according to the invention is characterized in that the warp-yarn layer of the woven-out warp is fixed on a roller assigned to the clamping members and is pulled back out of the weaving machine over the said specific length as a result of the rotation of this roller.
  • the apparatus according to the invention for carrying out this method includes a rotatable winding roller arranged parallel to the clamping members and having fixing means for the warp yarns, and by a carrier unit for the said winding roller and for the tying-in frame, the said carrier unit preferably being provided for mounting on a warp-beam transport unit.
  • FIG. 1 shows a diagrammatic view of a warp-beam transport unit having an apparatus according to the invention arranged on it;
  • FIG. 2 shows a section along the line II--II of FIG. 1.
  • FIG. 1 shows from the side, that is to say as seen transversely to the warp beam 1, a warp-beam transport unit BW which consists essentially of a front and a rear cuboid block 2 and 3, a base 4 connecting the blocks 2, 3 and receiving arms (not shown) for the warp beam 1.
  • the two blocks 2 and 3 contain, among other things, a drive for the warp-beam transport unit and, for transferring the warp beam 1 into the weaving machine, various controls, an operating desk and a respective bore for receiving a supporting column 5.
  • a supporting platform 6 for a tying-in frame 7 and for a winding unit 8 is fastened to the supporting columns 5.
  • trolleys 9 which are displaceable in the longitudinal direction of the supporting columns 5 and the adjustment of which takes place by means of hydraulic tappets 10 arranged in the blocks 2 and 3.
  • Each trolley 9 carries, on its inside, running rollers 11, between which a running rail 12 is guided; the supporting platform 6 is fastened to the two running rails 12.
  • the supporting platform 6 can be displaced via the running rails 12 transversely to the warp-beam transport unit BW between a transport position and a working position, and can be fixed in these positions.
  • the warp beam 1 In the working position on the weaving machine, the warp beam 1 is moved out laterally on the side of the warp-beam transport unit BW facing the weaving machine and is inserted into the bearings of the weaving machine.
  • the supporting platform 6, together with the built-on tying-in frame 7 and the winding unit 8, is displaced relative to the operator before the warp beam is inserted.
  • the total width or total depth of the installation in the working position amounts to around 2.5 m, this being absolutely unacceptable for transport purposes in view of the confined conditions of space in the weaving shed. Consequently, for transport purposes, the warp beam 1 and the supporting platform 6 are pushed in the manner of a drawer into the warp-beam transport unit BW, the width of which is then determined by the diameter of the warp beam 1 and, in the chosen example, amounts to 1.2 m.
  • the supporting platform 6 consists of two plate-shaped sidewalls 13 and a rest 14 which is connected to the sidewalls 13 and which is preferably formed by two sectional rails.
  • the connection between the rest 14 and at least one of the two sidewalls 13 is an articulated design. Possible distortions can thereby be compensated.
  • the sidewall 13 on the right in FIG. 1 is provided with a perforation, through which the clamping rails of the tying-in frame 7 can be pushed.
  • FIG. 2 shows, in a cross-section, the tying-in frame 7 and the winding unit 8 and the way in which they are fastened on the sectional rails 14 forming the rest of the supporting platform 6.
  • the tying-in frame 7 is formed by the upper part of a tying-in stand for the USTER TOPMATIC tying-in machine and consists essentially of two pairs of clamping members K1 and K2, between which the two yarn layers to be tied to one another are clamped, of a so-called brush beam 15 for achieving uniform warp-yarn tension, and suitable carriers 16 for the clamping members and for the brush beam 15.
  • the clamping members K1 on the entry side are formed by two clamps, each consisting of a clamping rail 17 made steel and of a clamping strip 18 made of aluminium.
  • the clamping rails 17 are known from the USTER TOPMATIC.
  • the lower clamping strip 18 is provided with an additional part made of aluminium, so that, as a result of lateral displacement, the desired spacing relative to the upper clamping strip 18 can be set for the clamping operation. After the clamping operation, the spacing shown is obtained by means of a lateral displacement of the additional part.
  • the clamping members K2 on the exit side are formed by two clamping elements, each having a clamping rail 19 and a clamping comb 20.
  • the warp-yarn layer Kn of the new warp beam 1 is clamped in between the lower clamping rail 17 and the associated clamping strip 18, on the one hand, and the lower clamping rail 19 and the associated clamping comb 20, on the other hand, outside the weaving mill.
  • the warp-beam transport unit BW (FIG. 1) is then moved into the weaving mill and brought into the working position, in which, with regard to FIG. 2, the warp beam 1 and, of course, also the weaving machine are located on the right-hand side of the tying-in frame 7.
  • the old warp Ka now to be clamped on the tying-in frame 7 was likewise prepared, specifically by means of the following operations: the warp was pulled forwards in the region of its end through the harness over a length of approximately 1.5 to 2 m. As a result, an absolutely exact separation and alignment of the individual warp yarns was achieved in this drawn-forward region as a result of the effect of the harness.
  • the old warp beam is then prepared to be transported away, by inserting a clip into the warp yarns at a specific spacing from the back bearer and by subsequently cutting off the warp. This spacing is under no circumstances smaller than the spacing between the winding unit 8 and the clamping member K1 located on the entry side.
  • the warp-yarn layer is then wound round the clip and the roll thus formed is deposited at the back bearer.
  • the empty warp beam is transported away, and the warp-beam transport unit BW, together with the new warp beam, can be moved up to the weaving machine and the new warp beam can be inserted into the weaving machine.
  • the upper clamping strip 18 is laid onto the lower clamping strip 18, on which it is fixed by means of built-in magnets.
  • the winding unit 8 which serves for pulling back the drawn-forward part of the old warp, consists essentially of a frame 21 screwed to the sectional rails 14, two side parts 22 mounted pivotably in this frame, a winding roller 24 which is mounted in the side parts 22 and rotatable via a crank 23 (FIG. 1) and which carries on its circumference a yarn clamp formed by a clamping strip 25, and a brake (not shown) for the winding roller 24.
  • This brake is formed by a steel band which loops round the winding roller 24 and which can be tightened by means of a screw.
  • the clamping strip 25 is taken out of its groove on the circumference of the winding roller 24 and the latter is rotated until the groove for the clamping strip 25 is located at the very top, as in FIG. 2.
  • the operator who, with regard to FIG. 2, stands on the left-hand side of the supporting platform 6 directly in front of the winding unit 8, now grasps the roll deposited at the back bearer and lifts this, as it unwinds simultaneously, over the tying-in frame 7, with the result that the warp-yarn layer Ka is laid over the winding roller 24.
  • the clamping strip 25 is then inserted and the warp is thereby firmly clamped on the winding roller 24.
  • the warp is cut off in front of the clip and then, as a result of rotation of the crank 23, wound up on the winding roller 24 and thereby pulled back out of the weaving machine. It can be advantageous, before the pull-back, to insert a comb into the warp in front of the warp-yarn regulator droppers in the running direction of the warp yarns during weaving.
  • the brake for the winding roller 24 is then tightened and the latter is fixed.
  • the upper clamping rail 17 is then applied to the upper clamping strip 18, and this can be made easier by a slight reverse rotation of the winding roller 24.
  • the winding roller 24, together with the side parts 22 carrying the roller 24, is pivoted downwards in the anti-clockwise direction, specifically to the level of the frame 21 or below this.
  • the yarn tension is made uniform over the entire warp width, and the upper clamping comb 20 is inserted and the clamping of the warp yarns on the upper clamping rail 19 carried out.
  • the warp yarns Ka are then cut off between the brush beam 15 and the clamping comb and are thereafter removed from the winding roller. The latter can be made easier by the previous insertion of a clip between the brush beam 15 and winding roller 24.
  • the tying-in operation can be carried out. As soon as this is executed, the clamping members K1 are released, the now one warp is tensioned and weaving can begin.
  • FIG. 1 in which the supporting platform 6 is displaceable transversely to the warp-beam transport unit BW via the trolleys 9, running rollers 11 and running rails 12, constitutes only one of a plurality of possible exemplary embodiments. It is likewise possible to connect the supporting platform 6 to the supporting columns 5 directly and to mount the tying-in frame 7 and the winding unit 8 on the supporting platform so that it can be pulled out in the manner of a drawer.
  • the operations described can easily be carried out by a single person. This is made possible in that a clip is used, instead of a cumbersome one-sided clamping rail, for unclamping the old warp on the weaving machine, and in that the old warp is pulled back by means of the winding roller 24.
  • the clip is so light that, together with the part of the old warp wound on it, it can be lifted over the clamping frame by one person, and the crank drive of the winding roller, the said crank drive having a suitable gearwheel transmission, likewise requires only one operator.
  • the method according to the invention leads to a reduction of the time required for the warp change. Since this reduction is achieved at an extremely low mechanical outlay, the method is also economical and results in an appreciable increase in performance.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
US08/162,191 1992-04-18 1993-04-16 Simplified warp change in which a winding unit and clamping members are mounted on a carrier unit Expired - Fee Related US5430916A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH01273/92A CH687541A5 (de) 1992-04-18 1992-04-18 Verfahren und Vorrichtung zum vereinfachten Kettwechsel.
CH1273/92 1992-04-18
PCT/CH1993/000100 WO1993021366A1 (de) 1992-04-18 1993-04-16 Verfahren und vorrichtung zum vereinfachten kettwechsel

Publications (1)

Publication Number Publication Date
US5430916A true US5430916A (en) 1995-07-11

Family

ID=4206564

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/162,191 Expired - Fee Related US5430916A (en) 1992-04-18 1993-04-16 Simplified warp change in which a winding unit and clamping members are mounted on a carrier unit

Country Status (7)

Country Link
US (1) US5430916A (de)
EP (1) EP0590120B1 (de)
JP (1) JPH06508666A (de)
CH (1) CH687541A5 (de)
DE (1) DE59301452D1 (de)
ES (1) ES2083283T3 (de)
WO (1) WO1993021366A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5775380A (en) * 1994-02-02 1998-07-07 Santrade Ltd. Warp beam replacement and threading apparatus
US20040011912A1 (en) * 2000-10-03 2004-01-22 T' Sas Francois Device for automatically changing threadlike materials in a thread processing machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100336317B1 (ko) * 1999-12-09 2002-05-13 김종섭 전동식 빔 캐리어
EP2662481B1 (de) * 2012-05-10 2016-03-02 Stäubli Sargans AG Spannvorrichtung, Fadenkreuzeinlesemaschine, Einziehmaschine und Verfahren zum Spannen einer Vielzahl von Kettfäden
CN104891382B (zh) * 2015-06-18 2017-03-01 青岛奥海纺机制造有限公司 一种用于辅助织布机盘头更换的装置及方法
EP3771758B1 (de) 2019-07-31 2022-03-30 Stäubli Sargans AG Fadenklemmvorrichtung und webmaschine mit solch einer fadenklemmvorrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386144A (en) * 1965-01-14 1968-06-04 Zellweger Uster Ag Support frame for warps
US3423808A (en) * 1965-12-10 1969-01-28 Zellweger Uster Ag Device for preparing and presenting new warp to a weaving loom
DE1535939A1 (de) * 1963-09-20 1969-10-02 Koefoed Hauberg Gestell mit Klemmgliedern zum Aufspannen von Webketten von deren Verknuepfen
US3696477A (en) * 1971-05-10 1972-10-10 Barber Colman Co Warp clamp
US3908249A (en) * 1973-06-28 1975-09-30 Zellweger Uster Ag Warp-tying frames combined with a carriage
US3974551A (en) * 1974-10-29 1976-08-17 Knotex Maschinenbau Gmbh Thread clamp for warp end tying-in machines
US5297323A (en) * 1989-09-19 1994-03-29 Rhone-Poulenc Viscosuisse S.A. Device and process for automatically joining threads

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH401861A (de) * 1963-05-20 1965-10-31 Zellweger Uster Ag Gestell zum Aufspannen von Webketten für Einziehmaschinen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1535939A1 (de) * 1963-09-20 1969-10-02 Koefoed Hauberg Gestell mit Klemmgliedern zum Aufspannen von Webketten von deren Verknuepfen
US3386144A (en) * 1965-01-14 1968-06-04 Zellweger Uster Ag Support frame for warps
US3423808A (en) * 1965-12-10 1969-01-28 Zellweger Uster Ag Device for preparing and presenting new warp to a weaving loom
US3696477A (en) * 1971-05-10 1972-10-10 Barber Colman Co Warp clamp
US3908249A (en) * 1973-06-28 1975-09-30 Zellweger Uster Ag Warp-tying frames combined with a carriage
US3974551A (en) * 1974-10-29 1976-08-17 Knotex Maschinenbau Gmbh Thread clamp for warp end tying-in machines
US5297323A (en) * 1989-09-19 1994-03-29 Rhone-Poulenc Viscosuisse S.A. Device and process for automatically joining threads

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5775380A (en) * 1994-02-02 1998-07-07 Santrade Ltd. Warp beam replacement and threading apparatus
US20040011912A1 (en) * 2000-10-03 2004-01-22 T' Sas Francois Device for automatically changing threadlike materials in a thread processing machine

Also Published As

Publication number Publication date
JPH06508666A (ja) 1994-09-29
WO1993021366A1 (de) 1993-10-28
CH687541A5 (de) 1996-12-31
EP0590120B1 (de) 1996-01-17
EP0590120A1 (de) 1994-04-06
DE59301452D1 (de) 1996-02-29
ES2083283T3 (es) 1996-04-01

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AS Assignment

Owner name: ZELWEGER USTER AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PLASCHY, MARTIN;FURRER, REINHARD;REEL/FRAME:006954/0615;SIGNING DATES FROM 19931126 TO 19931128

AS Assignment

Owner name: STAUBLI AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ZELLWEGER USTER AG;REEL/FRAME:007854/0427

Effective date: 19960314

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Effective date: 20030711

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362